I'm trying to feed rat pups I think they are called , I got a few with the snake. I tried dangling the rat, he goes towards it in the strike position then changes his mind? I then left it in the cage for two hours but never touched it......

Those temps are interesting in your rack, how long have you had them at that temp, people usually get shot down quickly when anything below 75-78f is mentioned, are yours healthy at that temp ? I can achieve probably 73-74f if I use the tub aswell as the 88-90 hotspot .